BibTeX:
@incollection{BahChronicleseditors,
  author = {Bahá'í Chronicles editors},
  title = {Mullá Mahmúd-i-Khú’í},
  booktitle = {Bahá'í Chronicles},
  url = {https://bahaichronicles.org/mulla-mahmud-khui/},
}

APA:
Bahá'í Chronicles editors. Mullá Mahmúd-i-Khú’í. In *Bahá'í Chronicles*.

MLA:
Bahá'í Chronicles editors. "Mullá Mahmúd-i-Khú’í." *Bahá'í Chronicles*, n.d..

Chicago:
Bahá'í Chronicles editors. "Mullá Mahmúd-i-Khú’í." In *Bahá'í Chronicles*, n.d..